Correspondence regarding the Isaac Newton Telescope Committee, including correspondence between Sir Richard Woolley at the Commonwealth Observatory, Mount Stromlo, and H. Spencer Jones, Astronomer Royal; minutes of various meetings of the committee; and monthly financial/progress reports. There is also correspondence with P.M.S. Blackett of the Imperial College of Science and Technology; Sir Howard Grubb, Parsons and Co. Ltd, Newcastle-upon-Tyne; the Rector of Cairo University; the Hydrographic Department of the Admiralty; Dirk Brouwer of the Yale University Observatory, New Haven, Connecticut; and R.O. Redman of The Observatories, Cambridge.